Sum of neighbor maps: number of 4Xn binary arrays indicating the locations of corresponding elements equal to the sum mod 3 of their horizontal and antidiagonal neighbors in a random 0..2 4Xn array.
A222389
Sum of neighbor maps: number of 4Xn binary arrays indicating the locations of corresponding elements equal to the sum mod 3 of their horizontal and antidiagonal neighbors in a random 0..2 4Xn array.
Terms
- a(0) =16a(1) =232a(2) =3968a(3) =63488a(4) =1048576a(5) =16776896a(6) =268369920a(7) =4294961152a(8) =68702608704
External references
- oeis: A222389